Biology Chapter 15.2 Word Scramble
|
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Term | Definition |
Fossil | The trace or remains of an organism that lived long ago, most commonly preserved in sedimentary rock. |
Superposition | A principle that states that younger rocks lie above older rocks if the layers have not been disturbed. |
Relative Age | The age of an object in relation to the ages of other objects. |
Absolute Age | The numeric age of an object or event, often stated in years before the present, as established by an absolute-dating process, such as radiometric dating. |
Biogeography | The study of the geographical distribution of living organisms and fossils on Earth. |
Homologous Structure | Anatomical structures in one species that, compared to other anatomical structures in another species, originated from a single anatomical structure in a common ancestor of the two species. |
Analogous Structure | An anatomical structure in one species that is similar in function and appearance, but no in evolutionary origin, to another anatomical structure in another species. |
Vestigial Structure | A structure in an organism that is reduced in size and function and that may have been complete and functional in the organism's ancestors. |
Phylogeny | The evolutionary history of a species or taxonomic group; the relationships by ancestry among species or taxonomic groups. |
Created by:
DragonT20
Popular Biology sets